This is preparation for #34327 (ConvexVPolyhedralSet_base, ConvexHPolyhedralSet_base)
CC: @kliem @kcrisman
Component: geometry
Work Issues: add StrictRay
Author: Matthias Koeppe
Branch/Commit: u/mkoeppe/polyhedronrepresentation__add_subclass_strictinequality @ c97760f
Reviewer: Vincent Delecroix
Issue created by migration from https://trac.sagemath.org/ticket/32159